Dead Duet 2 board? Want to triple check before replacing



  • Hi all,

    Looks like I have a dead board, Duet 2 Wifi, rev 1.2. No network connection to Wifi or indication from the printer hardware that it is booting upon power on. 5V, 3.3V (green), and red light between micro USB and reset button are on. Diagnostic light is also on constantly. 😕

    Removed all connections and SD card and then powered up with the computer USB with a verified data cable /port combo. No connection, nothing in device manager shows up. Have BOSSA installed.

    Tried holding down erase >1 sec and then push reset (still no SD card). Wasn't sure if I was supposed to keep holding erase so I did it both ways several times. Nothing happens anytime reset was pushed. No change in the lights. No connection to the computer (nothing in device manager COM). Cycled power many times with USB cable. Same story with LED indicators. Sucks!

    Toast? Anything else to try?



  • @D300VS_duet3d And when you connect the USB, if you touch the processor with your finger, it becomes hot? If so, your Board is dead, you need to change the processor.


  • administrators

    Before you give up, try a different USB cable, and a different USB port on the PC. Also check whether anything on the Duet is getting hot with just USB power applied.



  • @shadrincev said in Dead Duet 2 board? Want to triple check before replacing:

    @D300VS_duet3d And when you connect the USB, if you touch the processor with your finger, it becomes hot? If so, your Board is dead, you need to change the processor.

    Thanks for the tip. Yep, processor gets very hot almost immediately. I guess it's D-E-D dead.

    @dc42 said in Dead Duet 2 board? Want to triple check before replacing:

    Before you give up, try a different USB cable, and a different USB port on the PC. Also check whether anything on the Duet is getting hot with just USB power applied.

    Hi dc42, yes tried on two computers as well. Doesn't look good I guess, especially since the processor gets very hot quickly with USB power. Thank you for looking over my troubleshooting. It wasn't your baby's (the board's) fault, it was mine, actually. All I can say is that my 20 mo old is very fast with a hex key. His precision strike was over in about a plank second. Completely my fault.

    Cheers!



  • You could try asking a hacker space, or mobile phone repair shop if they'd be willing to replace the cpu if you provide the board and part. Not sure what labour cost is like where you are, but could be worth it, the cpu is around $7-8 in single qty.

    some good reading on the topic https://forum.duet3d.com/post/13832

    (edit: but could ofcourse be more damage)


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